With the occurrence of new applications such as Voice over IP (VoIP) and multimedia conference, there is an ongoing discussion about realizing QoS in the Internet today. Because of its potential scalability in support of QoS guarantees, the Differentiated Service (DiffServ) architecture with aggregate packet scheduling has recently attracted much attention in the networking community as a feasi...

In this work, we consider the goal of scheduling the maximum number of voice calls in a TDMA-based multi-radio, multi-channel mesh network. One of main challenges to achieve this goal is the difficulty in providing strict (packet-level) delay guarantees for voice traffic in capacity limited multi-hop wireless networks. In this respect, we propose DelayCheck, an online centralized scheduling and...

In this work, we consider the goal of scheduling the maximum number of voice calls in a TDMA-based multiradio, multi-channel mesh network. One of main challenges to achieve this goal is the difficulty in providing strict (packetlevel) delay guarantees for voice traffic in capacity limited multi-hop wireless networks. In this respect, we propose DelayCheck, an online centralized scheduling and c...

n the current debates around evaluation, quasi-experimental methods are considered by some to be the best way to know what works. They view narrative-based evaluation with some disdain. Stories are, they say, only perceptions. They can’t give you the ‘hard facts and figures’ that are needed to know what works and what to do next. And a handful of stories, no matter how in-depth, cannot lead to ...

Numerous voice, still image, audio, and video compression standards have been developed over the last 25 years, and significant advances in the state of the art have been achieved. However, in the more than 50 years since Shannon’s seminal 1959 paper, no rate distortion bounds for voice and video have been forthcoming. In this volume, we present the first rate distortion bounds for voice and vi...

This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Abstract This document defines the expected behaviour of a client to various aspects of a Voice Profile for Internet Mail (VPIM) message or any voice and/or fax message.